Cash purchase
Pay 100% up front. Capture every federal and state benefit yourself.
- Upfront
- 100% of system cost
- Term
- N/A - owned outright
- Ownership
- You own day one
- Return
- 12–22% after-tax IRR
- Highest lifetime savings - no financing spread
- Direct capture of 30–50% Investment Tax Credit + bonus depreciation
- Shortest payback (typ. 4–7 years)
- Free electricity for years 8–25+
- Largest cash outlay - ties up capital
- Requires federal tax appetite to use the ITC + MACRS
- You carry warranty, performance, and operating risk
Profitable C-corps and pass-throughs with tax appetite, healthy balance sheets, and a hurdle rate below ~12%.
If your effective tax rate is low, the ITC and depreciation bleed value - a PPA or lease may net you more.